In other words, is it possible to delay the story progression (and therefore tougher enemies) through not researching certain artifacts and not doing certain missions? Is it possible to "fail" story missions or suffer other consequences by not doing them for prolonged time?

  • nvm, this isn't a dupe, my bad
    – l I
    Commented Oct 15, 2012 at 1:15

1 Answer 1


From what I've been finding, the story mode is all unlock based. You have to research certain items or go to certain places for the story to unfold. However, this does not stop bigger and badder enemies from coming out at you. There are a few story-based enemies that come out, such as the Outsider or the Sectoid Commander. But I found that by delaying the main story and just playing the game, you get harder enemies, whether you like it or not. For example, I had to build a certain thing in game, but have put it off for a few months. As the months went by, I started to get harder things, like Cyberdisks and Berserkers. I'm sure if I keep this up, I'll find new and interesting aliens as well.

  • So, is it possible to just keep playing forever? And if you trigger all the story, do you get the option to keep playing, or is it game over? Commented Nov 29, 2012 at 15:57
  • 1
    Yes it is possible to just keep playing forever if you avoid building/researching certain key things. Finishing the story finishes the game, you can't keep going.
    – Drew
    Commented Dec 11, 2012 at 19:30

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